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– Can those ____ at the back of the classroom hear me?

A. seat            B. sit            C. seated          D. sat

At minus 130℃, a living cell can be ______ for a thousand years.

   A. spared  B. protected    C. preserved   D. developed

.I used to quarrel a lot with my parents, but now we ______ fine.

   A. look out         B. stay up       C. carry on     D. get along

You will be successful in the interview ____ you have confidence.

A. before    B. once    C. until    D. though

Leaves are found on all kinds of trees, but they differ greatly ________ size and shape.

   A. on B. from   C. by      D. in

You can see the stars on a clear night, but in the daytime they are ____ .

A. unavoidable              B. invisible            C. inaccessible              D. unavailable

There aren’t many seats left for the concert; you had better make sure ____ two today.

A、getting  B、to have got  C、that you get D、that you will get

By serving others, a person focuses on someone other than himself or herself, ______ can be very eye-opening and rewarding.

   A. who       B. which     C. what       D. that

—Could you tell me how to get to Victoria Street?

—Victoria Street? ______ is where the Grand Theatre is.

A. Such                        B. There                              C. That                         D. This

School children must be taught how to deal with dangerous _________．

A．states            B．conditions              C．situations               D．positions